[Nek5000-users] logfile

Fri Mar 30 09:54:42 CDT 2018

I am using the latest release. The flow is incompressible. I will
check with the non-dimensional formulation

On Fri, Mar 30, 2018 at 7:15 PM,  <nek5000-users at lists.mcs.anl.gov> wrote:
> Some random observations/comments from the logfile:
>
> - Please use the latest offical replease (available as a tarball) instead of the master branch on GitHub
> - Your're using a dimensional setup with (unreasonably) tight tolerances (as discussed)
> - Is your flow incompressible?
>
> -----Original message-----
>> From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
>> Sent: Friday 30th March 2018 15:33
>> To: nek5000-users at lists.mcs.anl.gov
>> Subject: Re: [Nek5000-users] logfile
>>
>> Please find the attached link with permissions enabled
>>  logfile <https://drive.google.com/file/d/1co21p9SNAq_Vs0YQgSp9Y_PeAWvOfem3/view?usp=drive_web>or try the link:
>>
>> https://drive.google.com/file/d/1co21p9SNAq_Vs0YQgSp9Y_PeAWvOfem3/view?usp=sharing <https://drive.google.com/file/d/1co21p9SNAq_Vs0YQgSp9Y_PeAWvOfem3/view?usp=sharing>
>>
>> On Fri, Mar 30, 2018 at 6:54 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>> wrote:
>> Can you please change the permissions such that everyone with the link can read it. Thanks!
>>
>> -----Original message-----
>> > From:nek5000-users at lists.mcs.anl.gov <mailto:From%3Anek5000-users at lists.mcs.anl.gov> <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>
>> > Sent: Friday 30th March 2018 13:42
>> > To: nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>
>> > Subject: Re: [Nek5000-users] logfile
>> >
>> > Please find the link for the logfile
>> >  logfile <https://drive.google.com/file/d/17OwfMBxok-h5Uy2QWtKGnQUYVBEiG5wC/view?usp=drive_web <https://drive.google.com/file/d/17OwfMBxok-h5Uy2QWtKGnQUYVBEiG5wC/view?usp=drive_web>>
>> >
>> > On Fri, Mar 30, 2018 at 4:59 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>> wrote:
>> > Can you please attach your logfile?
>> >
>> >
>> > -----Original message-----
>> > > From:nek5000-users at lists.mcs.anl.gov <mailto:From%3Anek5000-users at lists.mcs.anl.gov> <mailto:From%3Anek5000-users at lists.mcs.anl.gov <mailto:From%253Anek5000-users at lists.mcs.anl.gov>> <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>>
>> > > Sent: Friday 30th March 2018 13:21
>> > > To: nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>
>> > > Subject: Re: [Nek5000-users] logfile
>> > >
>> > > Thanks for the information.
>> > >
>> > > In my calculation, I am using a variable viscosity formulation. The
>> > > viscosity depends on the temperature. As the run proceeds the initial
>> > > residual for the TEMP gradually rises from 1E+03 until at around at
>> > > the value 6E+07, the logfile shows an error for non-positive
>> > > diffusivity. I have checked the temperature distribution which has no
>> > > such value so as to make the diffusivity negative (or zero). Please
>> > > indicate what I may be doing wrong.
>> > >
>> > > Thank you
>> > > Swarandeep
>> > >
>> > > On Fri, Mar 30, 2018 at 3:30 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>> wrote:
>> > > >
>> > > >>Step   1520, t= 7.6000000E-02, DT= 5.0000000E-05, C=  0.072 5.3831E+03 3.5403E+00
>> > > > timestep, time, dt, Courant Number, elapsed solver time, solver time of last time iteration
>> > > >
>> > > >>1520  Hmholtz TEMP      12   3.8789E-11   4.5120E+07   1.0000E-10
>> > > > timestep, solve type, iteration counter, final residual, initial residual, solver tolerance
>> > > >
>> > > > ...
>> > > >
>> > > >
>> > > > -----Original message-----
>> > > >> From:nek5000-users at lists.mcs.anl.gov <mailto:From%3Anek5000-users at lists.mcs.anl.gov> <mailto:From%3Anek5000-users at lists.mcs.anl.gov <mailto:From%253Anek5000-users at lists.mcs.anl.gov>> <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>>
>> > > >> Sent: Friday 30th March 2018 11:52
>> > > >> To: nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>
>> > > >> Subject: Re: [Nek5000-users] logfile
>> > > >>
>> > > >> The following is my logfile entry (sample lines). The first line is
>> > > >> understandable. What do the values in the third and following lines
>> > > >> denote?
>> > > >>
>> > > >>
>> > > >> ------------------------------------------------------
>> > > >> Step   1520, t= 7.6000000E-02, DT= 5.0000000E-05, C=  0.072 5.3831E+03
>> > > >> 3.5403E+00
>> > > >>              Solving for Hmholtz scalars
>> > > >>        1520  Hmholtz TEMP      12   3.8789E-11   4.5120E+07   1.0000E-10
>> > > >>        1520  Scalars done  7.6000E-02  8.3823E-02
>> > > >>              Solving for fluid
>> > > >>        1520  Helmh3 fluid      17   3.6594E-11   4.7524E-01   1.0000E-10
>> > > >>        1520  U-PRES gmres     120   1.3494E-08   4.5675E-06
>> > > >> 1.0000E-10   7.8799E-01   3.0171E+00
>> > > >>        1520  Fluid done  7.6000E-02  3.3650E+00
>> > > >> --------------------------------------------------------
>> > > >>
>> > > >> On Fri, Mar 30, 2018 at 3:05 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>> wrote:
>> > > >> > I am not sure what you are talking about?
>> > > >> >
>> > > >> > -----Original message-----
>> > > >> >> From:nek5000-users at lists.mcs.anl.gov <mailto:From%3Anek5000-users at lists.mcs.anl.gov> <mailto:From%3Anek5000-users at lists.mcs.anl.gov <mailto:From%253Anek5000-users at lists.mcs.anl.gov>> <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>>
>> > > >> >> Sent: Friday 30th March 2018 10:30
>> > > >> >> To: nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>
>> > > >> >> Subject: [Nek5000-users] logfile
>> > > >> >>
>> > > >> >> Hi Neks,
>> > > >> >>
>> > > >> >>      What are the entries in the logfile that is output from running
>> > > >> >> the code.  Please let me know where the entries are determined in the
>> > > >> >> code.
>> > > >> >>
>> > > >> >> Thanks
>> > > >> >> Swarandeep
>> > > >> >> _______________________________________________
>> > > >> >> Nek5000-users mailing list
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>> > > >> >>
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>> > > >>
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